SOLUTION: the average of 7 consecutive numbers is 20. what will be the largest number.?

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Question 1086595: the average of 7 consecutive numbers is 20. what will be the largest number.?
Found 2 solutions by MathLover1, josgarithmetic:
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!


%287x%2B21%29%2F7=20+
%28x%2B3%29=20+
highlight%28x=17%29

your numbers are: 17,18,19,20,21,22,23
the largest number is:23

Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
x, largest number

(not the neatest way , but)
%28x%2B%28x-1%29%2B%28x-2%29%2B%28x-3%29%2B%28x-4%29%2B%28x-5%29%2B%28x-6%29%29%2F7=20

Simplify and solve for x.